Look at the PSI-FI WI thread. Ideal pump location, simple water source tap for washer bottle. All aquamist stuff except for pump.
HSV should be close to jet but I think it's OK to to be no more then foot from it.
Pump does not have to be right on top of the HSV. Having things close to the L front makes the install eaiser and cleaner though.
Problem is driving the HSV, the PP cost's some $$ but IMO injecting water in a similar fashion to the way fuel is injected is better then any other method. It's the cost that keeps most away, but the components are absolutly top notch stuff, you get what you pay for. Considering that you also want to trim excess dumped fuel when using WI dictates a device such as the PP anyway so thats why I went the way I did.
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